Re: [RFCv2] rtc: ds1307: add square wave output from ds1308

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On 02/08/2017 at 07:27:27 +0200, Sean Nyekjaer wrote:
> +static int ds1308_write_control(struct ds1307 *ds1307, u8 mask, u8 value)
> +{
> +	struct mutex *lock = &ds1307->rtc->ops_lock;
> +	int ret;
> +
> +	mutex_lock(lock);
> +	ret = regmap_update_bits(ds1307->regmap, DS1307_REG_CONTROL,
> +				 mask, value);

This access is already properly locked, you don't need
ds1308_write_control.

(I know, the function below is not necessary either but it is there for
historical reasons).

> +	mutex_unlock(lock);
> +
> +	return ret;
> +}
> +
>  static int ds1337_write_control(struct ds1307 *ds1307, u8 mask, u8 value)
>  {
>  	struct mutex *lock = &ds1307->rtc->ops_lock;

-- 
Alexandre Belloni, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com



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